[lug] Sound driver

[Elyse Grasso]

On Monday 10 February 2003 01:00 pm, D. Stimits wrote:
> Elyse Grasso wrote:
> 
> > Here's a weird one.
> >
> > When I boot my laptop at work, the sound system always comes up. KDE
> > plays its little tune when I log in, sounds on websites work, etc.
> >
> > When I boot it at home, the sound system never comes up. No tune, no
> > sounds on websites. Soundcard detection acts like it works, but no
> > sounds come out if I click the test button.
> >
> > I make no changes to the setup: I just shutdown the laptop at work 
and
> > plug it in at home and start it up.
> >
> > There are ethernet connections at both places. The modem card stays 
in
> > the laptop at work and is found at boot time(so it doesn't get lost) 
and
> > the failure at home happens regardless of whether the modem cable is
> > plugged into the modem card.
> >
> > How does the laptop know that it is at home instead of at work and 
why
> > should that affect the sound drivers?
> >
> > KRUD/RedHat 8.0
> 
> In a plug-n-play system, where the BIOS is *not* set to "o/s is pnp 
> aware", irq gets assigned the same value each bootup by the BIOS 
itself. 
> If you have it set to IS pnp aware, then it is up to the o/s to do 
this 
> setup, and values change whenever different hardware is detected and 
> enabled. My guess is that your BIOS is set to IS pnp aware, and that 
> when no network is detected, that it bumps the irq to the next 
hardware 
> device, shifting it over on each PCI card that later gets enabled (and 
> most of the hardware involved, even if it is integrated, is PCI). On a 
> laptop I do not know if it is possible to set NOT pnp aware, but if it 
> is, do so. If not possible, then shifting the network to a PCI slot 
that 
> is initialized AFTER the sound card should make for consistent boots 
of 
> the sound card...trick is, you may not have peripherals that can have 
> swapped slots on a laptop.
> 
> D. Stimits, stimits AT attbi DOT com
> 
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> 
Networks are detected at both places and the cards are reported in the 
same order at boot time. Shutting down and restarting the machine at 
home (eg overnight on the weekend) doesn't change anything.

Based on people's suggestions, I'm suspecting DNS differences. It's the 
one thing I can think of that's definitely different between the 2 
sites. Though why anyone would make a sound driver that cares about dns 
and has no apparent way to configure it for local use only, escapes me.
-- 
Elyse Grasso